Table 1.

Injected volume of hydrogel spacer.

Patient	Hydrogel volume (mL)
1a	10.1
2	9.7
3	10.5
4	9.6
5	10.3
6	12
7	11.6
8	12.8
9	12.4
10a	11.7
11	10.5
12a	11.7
Mean ± SD	10.9 ± 1.1

^aPatients not included in dosimetric analysis due to not meeting prespecified rectal dose constraints.